Muscles of the Pectoral Girdle & Upper Limb (Lab) Flashcards
Trapezius
O: thoracic and cervical vertebrae; occipital bone
I: Spine of scapula; clavicle
A: - Superior Fibers of Trapezius: elevate and rotate scapula
- Middle Fibers of Trapezius: retract scapula
- Inferior Fibers of Trapezius: depress scapula
Rhomboideus
1. Rhomboid Minor
2. Rhomboid Major
O: Cervical and Thoracic vertebrae
I: Medial border of scapula
A: retract scapula
Rhomboideus
O: Cervical and Thoracic vertebrae
I: Medial border of scapula
A: retract scapula
Supraspinatus
O: Supraspinous fossa of scapula
I: Greater tubercle of humerus
A: Stabilize humerus
Supraspinatus
O: Supraspinous fossa of scapula
I: Greater tubercle of humerus
A: Stabilize humerus
Infraspinatus
O: Infraspinous fossa of scapula
I: Greater tubercle of humerus
A: Stabilizes Humerus
Infraspinatus
O: Infraspinous fossa of scapula
I: Greater tubercle of humerus
A: Stabilizes Humerus
Teres Minor
O: Lateral border of scapula
I: Greater tubercle of humerus
A: Stabilizes humerus; rotate shoulder laterally
Subscapularis
O: subscapular fossa of scapula
I: Lesser tubercle of humerus
A: Stabilizes humerus; rotates shoulder medially
Subscapularis
O: subscapular fossa of scapula
I: Lesser tubercle of humerus
A: Stabilizes humerus; rotates shoulder medially
Teres Major
O: Scapula
I: Lesser tubercle of humerus
A: Extend shoulder; adduct shoulder
Teres Major
O: Scapula
I: Lesser tubercle of humerus
A: Extend shoulder; adduct shoulder
Pectoralis Major
O: sternum; upper costal cartilages
I: intertubercular groove of humerus
A: flex shoulder; adduct shoulder
Pectoralis Major
O: sternum; upper costal cartilages
I: intertubercular groove of humerus
A: flex shoulder; adduct shoulder
Pectoralis Minor
O: ribs 3,4,5
I: Coracoid process of scapula
A: protract scapula; depress scapula
Pectoralis Minor
O: ribs 3,4,5
I: Coracoid process of the scapula
A: protract scapula; depress scapula
Serratus Anterior
O: Ribs 1-8
I: Medial Border of Scapula
A: Protract scapula
Serratus Anterior
O: Ribs 1-8
I: Medial Border of Scapula
A: Protract scapula
Latissimus Dorsi
O: Thoracic and lumbar vertebrae
I: Intertubercular groove of humerus
A: Extends shoulder (primary mover)
Latissimus Dorsi
O: Thoracic and lumbar vertebrae
I: Intertubercular groove of humerus
A: Extends shoulder (primary mover)